{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:36.596025", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2024-Dec-12_to_2024-Dec-14_74.0_61.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2024120001549}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "December 12 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 14 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 87744.64125376448}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 61.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 74.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "74.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 69.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 74.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[68.75, 60.5], [68.97, 61.03], [69.5, 61.25], [69.75, 61.15], [69.82, 61.18], [69.97, 61.53], [70.32, 61.68], [70.47, 62.03], 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"Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 60.0], [68.85, 60.25], [68.75, 60.5], [68.97, 61.03], [69.5, 61.25], [69.75, 61.15], [69.82, 61.18], [69.97, 61.53], [70.32, 61.68], [70.47, 62.03], [71.0, 62.25], [71.25, 62.15], [71.5, 62.25], [71.75, 62.15], [71.82, 62.18], [71.97, 62.53], [72.32, 62.68], [72.47, 63.03], [73.0, 63.25], [73.5, 63.04], [74.0, 63.25], [74.53, 63.03], [74.75, 62.5], [74.65, 62.25], [74.75, 62.0], [74.65, 61.75], [74.75, 61.5], [74.53, 60.97], [74.18, 60.82], [74.03, 60.47], [73.68, 60.32], [73.65, 60.25], [73.75, 60.0], [73.53, 59.47], [73.18, 59.32], [73.03, 58.97], [72.68, 58.82], [72.53, 58.47], [72.18, 58.32], [72.15, 58.25], [72.25, 58.0], [72.03, 57.47], [71.5, 57.25], [71.25, 57.35], [71.18, 57.32], [71.03, 56.97], [70.68, 56.82], [70.53, 56.47], [70.0, 56.25], [69.47, 56.47], [69.25, 57.0], [69.35, 57.25], [69.25, 57.5], [69.35, 57.75], [69.25, 58.0], [69.46, 58.5], [69.32, 58.82], [68.97, 58.97], [68.75, 59.5], [68.85, 59.75], [68.75, 60.0]]]]}, "2024-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.75, 60.0], [68.85, 60.25], [68.75, 60.5], [68.97, 61.03], [69.5, 61.25], [69.75, 61.15], [69.82, 61.18], [69.97, 61.53], [70.32, 61.68], [70.47, 62.03], [71.0, 62.25], [71.25, 62.15], [71.5, 62.25], [71.75, 62.15], [71.82, 62.18], [71.97, 62.53], [72.32, 62.68], [72.47, 63.03], [73.0, 63.25], [73.5, 63.04], [74.0, 63.25], [74.53, 63.03], [74.75, 62.5], [74.65, 62.25], [74.75, 62.0], [74.65, 61.75], [74.75, 61.5], [74.53, 60.97], [74.18, 60.82], [74.03, 60.47], [73.68, 60.32], [73.65, 60.25], [73.75, 60.0], [73.53, 59.47], [73.18, 59.32], [73.03, 58.97], [72.68, 58.82], [72.53, 58.47], [72.18, 58.32], [72.15, 58.25], [72.25, 58.0], [72.03, 57.47], [71.5, 57.25], [71.25, 57.35], [71.18, 57.32], [71.03, 56.97], [70.68, 56.82], [70.53, 56.47], [70.0, 56.25], [69.47, 56.47], [69.25, 57.0], 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56.25], [69.47, 56.47], [69.25, 57.0], [69.35, 57.25], [69.25, 57.5], [69.35, 57.75], [69.25, 58.0], [69.46, 58.5], [69.32, 58.82], [68.97, 58.97], [68.75, 59.5], [68.85, 59.75], [68.75, 60.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.415442763148718}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.956459343534728}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-3.878858791596656, -4.753104753103855, -5.318777265046776]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.024449412027991, -4.1499160766601335, -4.931223297119118]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.91079351105065, 9.795132355687493, 9.163452163866056]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.415442763148718, 11.295826774806187, 10.31692581682745]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3182237343791063, 1.2262773303750105, 1.1369804658235068]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.390216473767173, 1.3210356988290328, 1.2151503486000343]}}